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178557-28-3

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178557-28-3 Usage

Chemical Properties

Dark yellow powder

Check Digit Verification of cas no

The CAS Registry Mumber 178557-28-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,8,5,5 and 7 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 178557-28:
(8*1)+(7*7)+(6*8)+(5*5)+(4*5)+(3*7)+(2*2)+(1*8)=183
183 % 10 = 3
So 178557-28-3 is a valid CAS Registry Number.

178557-28-3Upstream product

178557-28-3Downstream Products

178557-28-3Relevant articles and documents

Enantioselective Palladium-Catalyzed Intramolecular α-Arylative Desymmetrization of 1,3-Diketones

Zhu, Chendan,Wang, Dingyi,Zhao, Yue,Sun, Wei-Yin,Shi, Zhuangzhi

supporting information, p. 16486 - 16489 (2017/11/30)

An efficient enantioselective protocol has been reported to build highly oxygenated and densely substituted bicyclo[m.n.1] skeletons through intramolecular asymmetric α-arylative desymmetrization of 1,3-diketones. Employing Pd catalyst and FOXAP ligand, various bicyclo[m.n.1] skeleton with different size can be accessed with high enantio- and diastereoselectivities. Utilizing the present method as a key step, formal asymmetric total synthesis of the (-)-parvifoline has been demonstrated.

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